| Message ID | 1426732773-7179-3-git-send-email-wens@csie.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, 19 Mar 2015 10:39:33 +0800 Chen-Yu Tsai <wens@csie.org> wrote: > Without proper regulator support for individual boards, it is dangerous > to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase > the frequency without the accompanying voltage increase, resulting in > an unstable system. > > Remove them for now. We can revisit them with the new version of OPP > bindings, which support boost settings and frequency ranges, among > other things. > > Signed-off-by: Chen-Yu Tsai <wens@csie.org> > --- > arch/arm/boot/dts/sun5i-a13.dtsi | 3 +-- > arch/arm/boot/dts/sun7i-a20.dtsi | 3 +-- > 2 files changed, 2 insertions(+), 4 deletions(-) What about the sun4i-a10.dtsi file? Was it forgotten or skipped deliberately?
On Thu, Mar 19, 2015 at 2:59 PM, Siarhei Siamashka <siarhei.siamashka@gmail.com> wrote: > On Thu, 19 Mar 2015 10:39:33 +0800 > Chen-Yu Tsai <wens@csie.org> wrote: > >> Without proper regulator support for individual boards, it is dangerous >> to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase >> the frequency without the accompanying voltage increase, resulting in >> an unstable system. >> >> Remove them for now. We can revisit them with the new version of OPP >> bindings, which support boost settings and frequency ranges, among >> other things. >> >> Signed-off-by: Chen-Yu Tsai <wens@csie.org> >> --- >> arch/arm/boot/dts/sun5i-a13.dtsi | 3 +-- >> arch/arm/boot/dts/sun7i-a20.dtsi | 3 +-- >> 2 files changed, 2 insertions(+), 4 deletions(-) > > What about the sun4i-a10.dtsi file? Was it forgotten or skipped > deliberately? sun4i-a10.dtsi does not have any overclocked/overvoltaged settings. The highest setting is 1008MHz @ 1.4V. ChenYu
On Thu, Mar 19, 2015 at 3:11 PM, Chen-Yu Tsai <wens@csie.org> wrote: > On Thu, Mar 19, 2015 at 2:59 PM, Siarhei Siamashka > <siarhei.siamashka@gmail.com> wrote: >> On Thu, 19 Mar 2015 10:39:33 +0800 >> Chen-Yu Tsai <wens@csie.org> wrote: >> >>> Without proper regulator support for individual boards, it is dangerous >>> to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase >>> the frequency without the accompanying voltage increase, resulting in >>> an unstable system. >>> >>> Remove them for now. We can revisit them with the new version of OPP >>> bindings, which support boost settings and frequency ranges, among >>> other things. >>> >>> Signed-off-by: Chen-Yu Tsai <wens@csie.org> >>> --- >>> arch/arm/boot/dts/sun5i-a13.dtsi | 3 +-- >>> arch/arm/boot/dts/sun7i-a20.dtsi | 3 +-- >>> 2 files changed, 2 insertions(+), 4 deletions(-) >> >> What about the sun4i-a10.dtsi file? Was it forgotten or skipped >> deliberately? > > sun4i-a10.dtsi does not have any overclocked/overvoltaged settings. > The highest setting is 1008MHz @ 1.4V. Oops. Sorry. I missed it. Will send v2. ChenYu
diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi index 5d9ce84486bb..39264f7c7ae6 100644 --- a/arch/arm/boot/dts/sun5i-a13.dtsi +++ b/arch/arm/boot/dts/sun5i-a13.dtsi @@ -140,7 +140,6 @@ clock-latency = <244144>; /* 8 32k periods */ operating-points = < /* kHz uV */ - 1104000 1500000 1008000 1400000 912000 1350000 864000 1300000 @@ -150,7 +149,7 @@ >; #cooling-cells = <2>; cooling-min-level = <0>; - cooling-max-level = <6>; + cooling-max-level = <5>; }; &ehci0 { diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index 3a8530b79f1c..fdd181792b4b 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -105,7 +105,6 @@ clock-latency = <244144>; /* 8 32k periods */ operating-points = < /* kHz uV */ - 1008000 1450000 960000 1400000 912000 1400000 864000 1300000 @@ -116,7 +115,7 @@ >; #cooling-cells = <2>; cooling-min-level = <0>; - cooling-max-level = <7>; + cooling-max-level = <6>; }; cpu@1 {
Without proper regulator support for individual boards, it is dangerous to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase the frequency without the accompanying voltage increase, resulting in an unstable system. Remove them for now. We can revisit them with the new version of OPP bindings, which support boost settings and frequency ranges, among other things. Signed-off-by: Chen-Yu Tsai <wens@csie.org> --- arch/arm/boot/dts/sun5i-a13.dtsi | 3 +-- arch/arm/boot/dts/sun7i-a20.dtsi | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-)